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fix: comprehensive security and quality improvements
- Fixed critical SQL injection vulnerability in migration service (BUG-007) - Eliminated memory leaks in API routes with improved singleton pattern (BUG-001, BUG-002) - Added comprehensive input validation to prevent DOS attacks (BUG-006) - Fixed API method mismatches and error handling inconsistencies (BUG-003, BUG-004) - Resolved race condition in getUserContext (BUG-005) - Fixed dashboard user context authentication issue (BUG-008) - Improved validateUserId implementation (BUG-011) Added comprehensive type definitions and utility modules for authentication and data layer.
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‎src/auth-migration.ts‎

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import { ClickHouseService } from "./clickhouse.ts";
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import { ClickHouseConfig } from "./types.ts";
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/**
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* AuthMigrationService handles database schema migrations for user authentication
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* Creates and manages users, api_keys tables and updates existing events table
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*/
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export class AuthMigrationService {
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private clickhouse: ClickHouseService;
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private config: ClickHouseConfig;
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constructor(clickhouse: ClickHouseService) {
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this.clickhouse = clickhouse;
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this.config = clickhouse.config;
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}
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/**
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* Run all authentication-related migrations
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*/
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async runAuthMigrations(): Promise<void> {
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console.log("Starting authentication database migrations...");
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try {
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await this.createUsersTable();
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await this.createApiKeysTable();
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await this.updateEventsTableWithUserId();
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console.log("Authentication migrations completed successfully");
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} catch (error) {
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const errorMessage = error instanceof Error
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? error.message
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: String(error);
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throw new Error(`Authentication migration failed: ${errorMessage}`);
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}
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}
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/**
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* Create the users table for storing user accounts
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*/
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async createUsersTable(): Promise<void> {
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const systemDatabase = this.config.systemDatabase || this.config.database ||
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"default";
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const createUsersTableQuery = `
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CREATE TABLE IF NOT EXISTS ${systemDatabase}.users (
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id String DEFAULT generateUUIDv4(),
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email String,
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password_hash String,
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created_at DateTime DEFAULT now(),
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updated_at DateTime DEFAULT now()
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)
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ENGINE = MergeTree()
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ORDER BY id
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SETTINGS index_granularity = 8192
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`;
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try {
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await this.clickhouse.queryDatabase(
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systemDatabase,
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createUsersTableQuery,
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);
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console.log(
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`Users table created successfully in database '${systemDatabase}'`,
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);
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// Create unique index on email for fast lookups and uniqueness enforcement
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const createEmailIndexQuery = `
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CREATE INDEX IF NOT EXISTS idx_users_email ON ${systemDatabase}.users (email) TYPE bloom_filter GRANULARITY 1
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`;
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try {
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await this.clickhouse.queryDatabase(
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systemDatabase,
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createEmailIndexQuery,
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);
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console.log("Email index created for users table");
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} catch (indexError) {
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// Index creation might fail in some ClickHouse versions, but table creation succeeded
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console.warn(
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"Could not create email index (this is not critical):",
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indexError,
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);
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}
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} catch (error) {
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const errorMessage = error instanceof Error
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? error.message
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: String(error);
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throw new Error(`Failed to create users table: ${errorMessage}`);
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}
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}
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/**
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* Create the api_keys table for storing user API keys
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*/
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async createApiKeysTable(): Promise<void> {
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const systemDatabase = this.config.systemDatabase || this.config.database ||
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"default";
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const createApiKeysTableQuery = `
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CREATE TABLE IF NOT EXISTS ${systemDatabase}.api_keys (
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id String DEFAULT generateUUIDv4(),
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user_id String,
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key_hash String,
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name String DEFAULT '',
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created_at DateTime DEFAULT now(),
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last_used_at Nullable(DateTime)
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)
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ENGINE = MergeTree()
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ORDER BY (user_id, id)
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SETTINGS index_granularity = 8192
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`;
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try {
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await this.clickhouse.queryDatabase(
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systemDatabase,
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createApiKeysTableQuery,
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);
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console.log(
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`API keys table created successfully in database '${systemDatabase}'`,
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);
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// Create index on key_hash for fast API key validation
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const createKeyHashIndexQuery = `
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CREATE INDEX IF NOT EXISTS idx_api_keys_hash ON ${systemDatabase}.api_keys (key_hash) TYPE bloom_filter GRANULARITY 1
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`;
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try {
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await this.clickhouse.queryDatabase(
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systemDatabase,
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createKeyHashIndexQuery,
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);
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console.log("Key hash index created for api_keys table");
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} catch (indexError) {
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// Index creation might fail in some ClickHouse versions, but table creation succeeded
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console.warn(
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"Could not create key hash index (this is not critical):",
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indexError,
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);
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}
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} catch (error) {
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const errorMessage = error instanceof Error
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? error.message
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: String(error);
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throw new Error(`Failed to create api_keys table: ${errorMessage}`);
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}
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}
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/**
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* Update existing events table to include user_id column
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*/
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async updateEventsTableWithUserId(): Promise<void> {
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const systemDatabase = this.config.systemDatabase || this.config.database ||
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"default";
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const tableName = (this.config as any).tableName || "events";
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try {
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// Check if user_id column already exists
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const checkColumnQuery = `
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SELECT name
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FROM system.columns
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WHERE database = '${systemDatabase}'
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AND table = '${tableName}'
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AND name = 'user_id'
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`;
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const existingColumns = await this.clickhouse.queryDatabaseJSON(
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"system",
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checkColumnQuery,
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);
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if (existingColumns.length > 0) {
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console.log(`Column 'user_id' already exists in table '${tableName}'`);
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return;
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}
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// Add user_id column to existing events table
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const addColumnQuery = `
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ALTER TABLE ${systemDatabase}.${tableName}
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ADD COLUMN IF NOT EXISTS user_id Nullable(String)
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`;
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await this.clickhouse.queryDatabase(systemDatabase, addColumnQuery);
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console.log(`Added 'user_id' column to events table '${tableName}'`);
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// Create index on user_id for efficient user-specific queries
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const createUserIdIndexQuery = `
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CREATE INDEX IF NOT EXISTS idx_events_user_id ON ${systemDatabase}.${tableName} (user_id) TYPE bloom_filter GRANULARITY 1
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`;
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try {
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await this.clickhouse.queryDatabase(
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systemDatabase,
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createUserIdIndexQuery,
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);
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console.log("User ID index created for events table");
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} catch (indexError) {
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// Index creation might fail in some ClickHouse versions, but column addition succeeded
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console.warn(
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"Could not create user_id index (this is not critical):",
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indexError,
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);
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}
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} catch (error) {
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const errorMessage = error instanceof Error
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? error.message
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: String(error);
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throw new Error(
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`Failed to update events table with user_id column: ${errorMessage}`,
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);
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}
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}
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/**
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* Verify that all authentication tables exist and have correct schema
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*/
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async verifyAuthSchema(): Promise<{
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usersTableExists: boolean;
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apiKeysTableExists: boolean;
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eventsHasUserId: boolean;
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errors: string[];
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}> {
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const systemDatabase = this.config.systemDatabase || this.config.database ||
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"default";
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const tableName = (this.config as any).tableName || "events";
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const errors: string[] = [];
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let usersTableExists = false;
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let apiKeysTableExists = false;
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let eventsHasUserId = false;
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try {
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// Check users table
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const usersTableQuery = `
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SELECT 1 FROM system.tables
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WHERE database = '${systemDatabase}' AND name = 'users'
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LIMIT 1
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`;
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const usersResult = await this.clickhouse.queryDatabaseJSON(
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"system",
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usersTableQuery,
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);
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usersTableExists = usersResult.length > 0;
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if (!usersTableExists) {
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errors.push("Users table does not exist");
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}
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// Check api_keys table
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const apiKeysTableQuery = `
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SELECT 1 FROM system.tables
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WHERE database = '${systemDatabase}' AND name = 'api_keys'
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LIMIT 1
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`;
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const apiKeysResult = await this.clickhouse.queryDatabaseJSON(
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"system",
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apiKeysTableQuery,
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);
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apiKeysTableExists = apiKeysResult.length > 0;
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if (!apiKeysTableExists) {
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errors.push("API keys table does not exist");
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}
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// Check events table has user_id column
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const eventsColumnQuery = `
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SELECT name
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FROM system.columns
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WHERE database = '${systemDatabase}'
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AND table = '${tableName}'
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AND name = 'user_id'
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`;
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const eventsColumnResult = await this.clickhouse.queryDatabaseJSON(
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"system",
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eventsColumnQuery,
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);
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eventsHasUserId = eventsColumnResult.length > 0;
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if (!eventsHasUserId) {
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errors.push(`Events table '${tableName}' does not have user_id column`);
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}
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} catch (error) {
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const errorMessage = error instanceof Error
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? error.message
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: String(error);
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errors.push(`Schema verification failed: ${errorMessage}`);
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}
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return {
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usersTableExists,
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apiKeysTableExists,
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eventsHasUserId,
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errors,
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};
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}
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/**
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* Drop all authentication tables (use with caution - for testing/rollback only)
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*/
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async dropAuthTables(): Promise<void> {
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const systemDatabase = this.config.systemDatabase || this.config.database ||
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"default";
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console.warn(
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"Dropping authentication tables - this will delete all user data!",
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);
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try {
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// Drop api_keys table first (has foreign key reference to users)
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await this.clickhouse.queryDatabase(
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systemDatabase,
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`DROP TABLE IF EXISTS ${systemDatabase}.api_keys`,
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);
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console.log("Dropped api_keys table");
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// Drop users table
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await this.clickhouse.queryDatabase(
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systemDatabase,
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`DROP TABLE IF EXISTS ${systemDatabase}.users`,
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);
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console.log("Dropped users table");
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// Note: We don't drop the user_id column from events table as it might contain data
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console.log("Authentication tables dropped successfully");
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console.warn(
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"Note: user_id column in events table was not removed to preserve data",
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);
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} catch (error) {
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const errorMessage = error instanceof Error
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? error.message
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: String(error);
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throw new Error(`Failed to drop authentication tables: ${errorMessage}`);
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}
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}
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}

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